I'm a dancer and I am having profuse sweating, nausea with vomiting, skin paleness, muscle twitching (especially in eyes) when I perform or have an increase in my activity. I also am having problems trying to eat or drink. After a couple of bites I may vomit or at best get nauseated. I feel like I get very hot during my activity and then all these symptoms start. However, the eating problem is pretty much at anytime. I have had a general lab work up with normal results except for being somewhat dehydrated. Does anyone have an idea of what may be going on with me?